em10 - "i remember watching a programme with Richard Dawkins, taking a bunch of school children to the seaside, and explaining to them the basis of evolution".
I saw that program too, Em10. Didn't he interview their teachers? And weren't the teachers scared stiff of contradicting the ignorant prejudices of their fundamentalist pupils?
Dawkins, of course, made the famous analogy comparing religious instruction to child abuse. The more temperate Daniel Dennett made this suggestion: let parents teach their children to follow their own faith if they want, but schools should teach children about all religions. If comparative religion were a core subject it would become apparent to any thinking child that particular religious beliefs are mere geographical accidents, that the case for revelation is non-existent and that religion is clearly man-made.